Vitek Xpress VT-KBD1 User Manual page 17

2.2 SINGLE DVR CONFIGURATION
AWG # 24
BNC
POWER POWER
AC 24V AC 24V
SPOT MONITOR
BNC BNC
VIDEO
4 ALARM INPUT
1 AUX OUTPUT
MAIN MONITOR
TXB TXA RXB RXA
SW1
15
VT-KBD1
POWER
AC 24V
4 ALARM INPUT
1 AUX OUTPUT
FGND AC- AC+
RS-422 RS-485 or
FULL DUPLEX MODE RS-422 HALF DUPLEX MODE